[MPerry]

I have been trying to figure out what the device is that is attached to my black tank. Its a small aluminum box with what looks to be 12v power in, and 4 leads out. These leads run to "sensors" located around the bottom of the black tank. I would think they were level sensors, except my 1983 does not have level indicator (to best of my knowledge), and they do not seem to lead any where. The aluminum box has no markings. I sure am curious to know what this thing may be.